An elegant design from ChuChu Baby brand, The bottles are specifically for moms to enjoy fashionable styles. The design expresses the gentleness and cuteness baby girls, makes child-rearing fun and fashionable. Super Cross Cut Hole TechnologyFWorld-wide patents applied. This adaptive structure maintains a suitable hole size that may be used until weaning. The super cross cut hole is usually closed, but only opened by the baby"s suction and teething power. It will not leak even if bottle tips over. Because ChuChu Baby"s teat resembles mom"s breasts, it can make an adjustment of the amount of milk flow controlled by the baby"s suction. It is made of transparent and tough Silicone. Anti-ColicFThe air vent located on the side of the teat prevents the inside of bottle from becoming a vacuum. Any air adjustments by the cap are unnecessary and this structu